West Sand Quarry (Miocene of the United States)

Also known as Chan. D.; Wilson's Quarry No. 8

Where: Sioux County, Nebraska (42.4° N, 103.8° W: paleocoordinates 43.1° N, 99.9° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: subcycle 2 Member (Olcott Formation), Hemingfordian (20.4 - 16.0 Ma)

Environment/lithology: terrestrial

Primary reference: M. F. Skinner, S. M. Skinner, and R. J. Gooris. 1977. Stratigraphy and biostratigraphy of late Cenozoic deposits in central Sioux County, western Nebraska. Bulletin of the American Museum of Natural History 158(5):263-370 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 18019: authorized by John Alroy, entered by John Alroy on 19.05.2000, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Perissodactyla - Rhinocerotidae
Teleoceras medicornutum4 Osborn 1904 rhinoceros
Aphelops megalodus4 Cope 1873 rhinoceros
 Perissodactyla - Equidae
Merychippus insignis3 Leidy 1856 horse
Supplemental Table S1
Neohipparion sp.3 Gidley 1903 hipparionine horse
Supplemental Table S1
Acritohippus isonesus3 Cope 1889 horse
Supplemental Table S1
Desmatippus integer Matthew 1924 anchitheriine horse
 Carnivora - Canidae
Microtomarctus conferta5 Matthew 1918 bone-crushing dog
Tomarctus brevirostris5 Cope 1873 bone-crushing dog
probably also includes their "Quarry 8" specimen
Tomarctus hippophaga5 Matthew and Cook 1909 bone-crushing dog
 Ungulata - Merycoidodontidae
Brachycrus siouense2 Sinclair 1915 oreodont
Merychyus relictus Matthew and Cook 1909 oreodont
see Schultz and Falkenbach 1947
 Ungulata - Protoceratidae
Lambdoceras siouxensis1 Frick 1937 protoceratid